Some of them are buried deep in the Caucasus mountains, others are lurking in abandoned salt mines underneath forgotten villages, yet others are set up deep underwater in Lake Baikal - all are fully functional, facilitating cutting-edge research, with scientific progress routinely made on glaringly obsolete equipment.
And they come with their own quirks, too, like an Orthodox church sharing space with a neutrino detection facility in an old salt mine, or the real danger of falling rocks at the entrance to another facility. Link